put api method in node js |node js tutorials

 send from post man 

that will place into my json 

then it will submit ournew json

let bodyParser = require('body-parser');

app.use(bodyParser.urlencoded({ extended: true }));

app.put("/persond",(req,res,next) =>

{

let _body=req.body;

let person_list=[

{name:"huderee",addr:"vamsi1",id:1},

{name:"hudere",addr:"vamsi2",id:2},

{name:"hudere",addr:"vamsi3",id:3}

];

let index=person_list.findIndex(x=>x.id==_body.id);

if(index !=-1)

{

person_list[index]=_body;

}

res.send(person_list);

})

total code

const express= require('express');

const app = express();

const PORT=3000;

app.get("/person",(req,res,next) =>

{

let person={name:"hudere",addr:"vamsi",id:1}

res.send(person);

}

);

app.get("/persons/:id",(req,res,next) =>

{

console.log(req);

let idd=req.params.id;

let person=[

{name:"hudere",addr:"vamsi1",id:1},

{name:"hudere",addr:"vamsi2",id:2},

{name:"hudere",addr:"vamsi3",id:3}

];

person=person.filter(x=>x.id==idd);

res.send(person);

}

)

app.get("/person_with_query",(req,res,next) =>

{

let query=req.query;

let person=[

{name:"huderee",addr:"vamsi1",id:1},

{name:"hudere",addr:"vamsi2",id:2},

{name:"hudere",addr:"vamsi3",id:3},

{name:"hudere",addr:"vamsi3",id:1}

];

person=person.filter(x=>x.id==query.id & x.name ==query.name);

res.send(person);

})

let bodyParser = require('body-parser');

app.use(bodyParser.urlencoded({ extended: true }));

app.put("/persond",(req,res,next) =>

{

let _body=req.body;

let person_list=[

{name:"huderee",addr:"vamsi1",id:1},

{name:"hudere",addr:"vamsi2",id:2},

{name:"hudere",addr:"vamsi3",id:3}

];

let index=person_list.findIndex(x=>x.id==_body.id);

if(index !=-1)

{

person_list[index]=_body;

}

res.send(person_list);

})

app.listen(PORT,() =>

{

console.log("server on::"+PORT)

}

)

 

in put method 

we will send some data to server in request body

whatever we recieved we wil take and update in our json

we write in raw as json inputs

method is put

and if u look at code

take the requested data into body variabvle

we already have json wite into person_list

from requested body find that id in json

if matches

update at that index

send to post man back

if u forget json parser it will show error requested body not defined